current.pred = null;
        current.succ = null;

        current = next;
      }
      successor(header, header);
      rootReference.clear();
    } else {
      // TODO(cpovirk): Perhaps we can optimize in this case, too?
      Iterators.clear(entryIterator());
    }
  }

  private Entry<E> wrapEntry(AvlNode<E> baseEntry) {
    return new Multisets.AbstractEntry<E>() {
      @Override

import org.jspecify.annotations.Nullable;

/**
 * Unit tests for {@code Ordering}.
 *
 * @author Jesse Wilson
 */
@GwtCompatible
@NullMarked
public class OrderingTest extends TestCase {
  // TODO(cpovirk): some of these are inexplicably slow (20-30s) under GWT

  private final Ordering<Number> numberOrdering = new NumberOrdering();

  public void testAllEqual() {

import org.jspecify.annotations.Nullable;

/**
 * Unit tests for {@code Ordering}.
 *
 * @author Jesse Wilson
 */
@GwtCompatible
@NullMarked
public class OrderingTest extends TestCase {
  // TODO(cpovirk): some of these are inexplicably slow (20-30s) under GWT

  private final Ordering<Number> numberOrdering = new NumberOrdering();

  public void testAllEqual() {

      @Override
      protected Iterator<Integer> newTargetIterator() {
        return Iterators.forArray(1, 2, 3);
      }
    }.test();
  }

  /*
   * TODO(cpovirk): Test forArray with ListIteratorTester (not just IteratorTester), including with
   * a start position other than 0.
   */

  public void testForEnumerationEmpty() {
    Enumeration<Integer> enumer = enumerate();

    super.setUp();
    logHandler = new TestLogHandler();
    LocalCache.logger.addHandler(logHandler);
  }

  @Override
  public void tearDown() throws Exception {
    super.tearDown();
    // TODO(cpovirk): run tests in other thread instead of messing with main thread interrupt status
    Thread.interrupted();
    LocalCache.logger.removeHandler(logHandler);
  }

  private Throwable popLoggedThrowable() {

 */
@SuppressWarnings({
  "GoodTime", // lots of violations (nanosecond math)
  "nullness", // too much trouble for the payoff
})
@GwtCompatible
@NullUnmarked // TODO(cpovirk): Annotate for nullness.
final class LocalCache<K, V> extends AbstractMap<K, V> implements ConcurrentMap<K, V> {

  /*
   * The basic strategy is to subdivide the table among Segments, each of which itself is a

    super.setUp();
    logHandler = new TestLogHandler();
    LocalCache.logger.addHandler(logHandler);
  }

  @Override
  public void tearDown() throws Exception {
    super.tearDown();
    // TODO(cpovirk): run tests in other thread instead of messing with main thread interrupt status
    Thread.interrupted();
    LocalCache.logger.removeHandler(logHandler);
  }

  private Throwable popLoggedThrowable() {

@J2ktIncompatible
@GwtIncompatible
@SuppressWarnings({
  "GuardedBy", // TODO(b/35466881): Fix or suppress.
  "nullness", // too much trouble for the payoff
})
@NullUnmarked // TODO(cpovirk): Annotate for nullness.
final class MapMakerInternalMap<
        K,
        V,
        E extends MapMakerInternalMap.InternalEntry<K, V, E>,
        S extends MapMakerInternalMap.Segment<K, V, E, S>>

      V leftValue = entry.getValue();
      if (right.containsKey(leftKey)) {
        /*
         * The cast is safe because onlyOnRight contains all the keys of right.
         *
         * TODO(cpovirk): Consider checking onlyOnRight.containsKey instead of right.containsKey.
         * That could change behavior if the input maps use different equivalence relations (and so

      V leftValue = entry.getValue();
      if (right.containsKey(leftKey)) {
        /*
         * The cast is safe because onlyOnRight contains all the keys of right.
         *
         * TODO(cpovirk): Consider checking onlyOnRight.containsKey instead of right.containsKey.
         * That could change behavior if the input maps use different equivalence relations (and so